Firmware dump for the ASUS S400CA main board, revision 3.1, an 8 MB binary. The file covers the full SPI flash and is written with a programmer such as a CH341A or…

BIOS dump for the ASUS S400CA laptop, revision given as REV21.1, possibly meaning revision 2.1, in a 3.62 MB RAR archive.

A second copy of the ASUS S400C / S400CA BIOS dump marked CPU onboard with the SLJ8E code, which appears to refer to the soldered processor.

BIOS image for the ASUS S400C / S400CA laptop, labelled as taken from the CPU board, with the token UNBORD most likely meaning onboard and SLJ8E apparently a processor…

BIOS dump for the ASUS S400CA notebook with the Intel Management Engine region cleaned, so the ME will reinitialize on first start instead of carrying the previous…

Firmware dump for the ASUS S400CA, board revision 3.1, in a 3.71 MB RAR archive. The name includes u2801, which is probably the reference designator of the flash chip on…

BIOS package for the ASUS S400CA laptop motherboard at revision 2.1, compressed into a zip archive of roughly 3.75 MB.

BIOS dump for the ASUS S400CA laptop, board revision 2.1, packed in a 3.72 MB RAR. The OK tag in the name means it was reported as a working image.

ASUS S400CA BIOS dump for main board revision 3.1, where U2801 appears to mark the flash chip position on the board, packed as a 3.66 MB RAR.